If you enter the classic Konami code (Up, Up, Down, Down, Left, Right, Left, Right, B, A) on the title screen, you should hear the Turtles say "Yeah!" Now hit start and go to the story mode. Every time your turtle takes a step in one of the stages, a goofy "boing!" sound will be heard.
Set your GCN's date to October 31 and the Turtles will all be wearing pumpkins on their heads.
Set your GCN's date to December 25 and the Turtles will all be wearing little Santa hats.
1. To get Jones Mode, put in SRLMD
2. To get Slinter mode, put in LSLML
3. To get Leo's alternate costume, put in RSLMD and hold L or R while selecting Leo.
(P.S. I'll put more up later
Enter these cheats.
Bonus Course 1: LSMMS
Bonus Course 2: SSLDM
Bonus Course 3: MSSLD
Bonus Course 4: SRLMD
Bonus Course 5: LSDRM
Enter these codes/symbols at the Password screen:
RRSLR Alt Donnie Costume
RSLMD Alt Leo Costume
RLSLS Alt Mikey Costume
SLSMM Alt Raph Costume
DDDML Alt Sound Effects
LSMMS Bonus Course 1
SSLDM Bonus Course 2
MSSLD Bonus Course 3
SRLMD Bonus Course 4
LSDRM Bonus Course 5
SRLMD Casey Jones Mode
DRLDS Donnie gains attack power
MLSDS Donnie: longer bandana/ 2x power up effect
MLMLS Donnie: shorter bandana/ 2x defense
LMLSD Improved weapon for Leonardo
MSRMM Improved Weapon for Michelangelo.
RDSRL Improved weapon for Raphael.
SSLDM Leo: Inf Shurikens
RSDMM Leo: longer bandana/ 2x power up effect
LDSMS Leo: shorter bandana/ 2x defense
RLMSM Mikey: longer bandana/ 2x power up effect
MSSLD Mikey: Inf Shurikens
RLDDR Mikey: shorter bandana/ 2x defense
LSDRM Playmates Toy Database
RSSSR Raph: longer bandana/ 2x power up effect
SDRML Raph: shorter bandana/ 2x defense
LSLML Splinter Mode
Here's how to give him a biker costume. First, go to options and click on password. Put in DMDML.
1) Unlock Playmates Toy Data Base: LSDRM
2) Unlimited Fire Shurikens/All Food is Pizza (Michaelangelo): MSSLD
3) Power Up Effects Double (Leonardo): RSDMM
Challenge Mode-Beat Oroku Saki in story mode
Character: Casey Jones-Beat Stage 1 as Raph
Character: Evil Turtlebot-Beat Stage 3 as any turtle
Character: Hun-Beat Stage 6 as Mikey
Character: Oroku Saki-Beat Oroku Saki as any turtle
Character: Shredder-Beat Shredder as any turtle
Character: Splinter-Beat Dojo Stage as Leo
Character: Yoshi Hamato-Beat Challenge Mode as any turtle
Gembu Turtle Power-Beat story mode with all four turtles
Oroku Saki fight-Beat game with all 4 turtles